US 2013/0076159 A1 · WINDING CONFIGURATION OF DOUBLY SALIENT PERMANENT MAGNET ELECTRIC MACHINE

Abstract

The present invention relates to a doubly salient permanent magnet electric machine that has a winding structure in which series-connected windings are included in the phase windings of a mover, and that has a stator implemented as an iron core having a plurality of permanent magnets and a plurality of stator salient poles neighboring the permanent magnets, thus reducing the number of permanent magnets by half. An electric machine is configured such that a mover moves while facing a stator and includes an N (a number of power phases) multiple number of teeth and phase windings wound around the teeth, and one or more pairs of phase windings of the mover mutually having a phase difference of 180° are connected in series, and the stator includes permanent magnets in depressions between individual stator salient poles of an iron core in which the stator salient poles are formed.

Claims18

Dependent claims

An electric machine, wherein:

a mover moves while facing a stator and comprises an N (a number of power phases) multiple number of teeth and phase windings wound around the teeth, and one or more pairs of phase windings of the mover electrically have a phase difference (β) of 180°,
the mover is configured such that a plurality of phase windings are included in a phase winding group for each of N phases, and one or more pairs of windings for a corresponding phase and a reverse phase (/phase) wound around respective teeth to electrically have a phase difference (β) of 180°, among phase windings included in each phase winding group, are connected to have opposite current directions, and
adjacent phase winding groups are arranged such that a separation distance (α) therebetween electrically has a difference corresponding to a phase angle of 180/N°.

An electric machine, wherein:

a first mover and a second mover move while facing a stator, each of the first and second movers comprises an N (a number of power phases) multiple number of teeth and phase windings wound around the teeth, and one or more pairs of phase windings of the first or second mover electrically have a phase difference (β) of 180°,
the first or second mover is configured such that a plurality of phase windings are included in a phase winding group for each of N phases, and one or more pairs of windings for a corresponding phase and a reverse phase (/phase) wound around respective teeth to electrically have a phase difference (β) of 180°, among phase windings included in each phase winding group, are connected to have opposite current directions, and
adjacent phase winding groups are arranged such that a separation distance (α) therebetween electrically has a difference corresponding to a phase angle of 180/N°.

Dependencies are inferred from the claim text.

Winding configuration of doubly salient permanent magnet electric machine

Life of this patent

Winding configuration of doubly salient permanent magnet electric machine

Life of this patent

Abstract

Claims18